Study on Energy Saving Technology in Building and Electric Vehicles Application

• Main Authors: Yu-Yuan Hsieh, 謝有源
• Other Authors: Bin-Juine Huang
• Format: Others
• Language: zh-TW
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/fq6b7k

博士 === 國立臺灣大學 === 機械工程學研究所 === 107 === Ventilation (or air exchange) and air-conditioning are very important for people''s activities in enclosed space. Air exchange affects the energy consumption of air-conditioning systems. This study aims to explore how to reduce energy consumption of air-conditioning and develop new energy-saving ventilation technologies, and review the revision of ventilation standards. In order to reduce the power consumption of air conditioners, the study develops active spot cooling energy-saving technology to provide localized cooling effects for the human body, so that the human body feels cool without using too much cold air to adjust the air-conditioning setting temperature and reduce power consumption. It is estimated to save 30% of power consumption. In order to reduce the energy consumption of air-conditioning for air exchange, the study develops heat pump fresh air exchanger(HPFAE) using a heat pump to cool the the fresh outdoor air through the evaporator and then introduce it into the room. Then, the indoor exhausted cold air is used to cool the condenser of the heat pump which reduces the power consumption of the air conditioner (approximately 10% increase in COP) and obtains fresh ventilation. The above-mentioned energy-saving air exchange technology, spot cooling technology and thermal insulation technology are applied to electric vehicles, which can reduce the heat input by 64%, reduce air-conditioning power consumption by 71.1%, and increase the endurance of electric vehicles. The heat pump energy-saving air exchange technology in the study uses the forced air supply method. However, natural ventilation is also an important air exchanged method that does not consume energy. In this study, a simple natural ventilation test method was developed to accurately analyze natural ventilation volume and provided a rapid detection of natural ventilation in enclosed spaces. Finally, due to the effects of air exchange on energy consumption of air-conditioning, there are different requirements for different activities in different locations. This study conducted in-depth discussion of the ASHRAE Standard 62-2010, and proposed that the criteria of the external air demand for some sites (such as classrooms, conference rooms, multi-functional conference rooms, reception areas, and multi-purpose conference rooms, etc.) should be adjusted partially. The improvement suggestions can be taken care of human health and rationally improve energy consumption in order to achieve more energy-saving goals.